Читать книгу Surface Science and Adhesion in Cosmetics - Группа авторов - Страница 17

Throughout the development of a lipstick product, in vitro performance analysis is conducted in order to develop and optimize the best-performing product to be launched in market. Typically, both standardized and productspecific characterization tests are conducted in order to properly rank formulations and identify product weaknesses. Formulation characterization tests can be conducted by applying the formulation onto lips, skin, artificial skin, or glass, depending on the test method being used. This section shall provide a brief overview as to the types of tests available and used in the development of lipstick formulations, more specifically for long-wear lipstick formulations.